Connecting Profibus to Optomux

You have two devices in two different buildings on two completely different networks, one that uses the Profibus protocol to communicate, while the other one talks Optomux Opto22 protocol and they need to talk to each other. What do you do?

A FieldServer is a protocol converter or gateway that can communicate in many different protocols and physical layers including Profibus protocol and the Optomux Opto22 protocol. The Fieldserver acts as a middle man between the two devices. It reads data from one device, stores it internally and makes it available to the 2nd device using another protocol. This is how the FieldServer converts Profibus data to Optomux Opto22 data.

It's a simple solution to a common problem that we can help you with.

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The FieldServer Profibus protocol translator/gateway provides a wealth of features to enable data transfer between Profibus DP networks and different devices and networks utilizing serial, Ethernet or LonWorks protocols. The extensive library of FieldServer drivers provides easy Profibus DP interoperability with devices and networks used in building automation, HVAC, fire and process control industries.

Support is provided for Master and Server applications.

The FieldServer Profibus DP Master driver for the FS-B3520 can be used to transfer I/O data with up to 125 Profibus DP Slave devices. The FieldServer is programmed with an embedded database using the required third part configuration tool. The embedded database contains information on the number of slaves and I/O modules to be transferred with each slave. The tool requires the input of GSD/E files for each slave to be connected.

More information, Driver Data Sheet

Optomux Opto22

The Optomux Driver allows the FieldServer to transfer data to and from devices over either RS-232 or RS-485 using the Optomux Driver protocol. The Optomux driver is a client only driver and can poll an Optomux protocol compliant device but not emulate one.

The Optomux protocol provides a large command set. Many of the commands are used for OPTO22 device configuration. This driver supports the full command set and thus the driver may be used to configure as well as to poll OPTO22 devices.

Operating Methods

The Optomux driver provides three methods of operation. Users may use any combination of methods.

Static Operation : If the hardware configuration is fixed and known then this is a suitable method. The devices to be polled/commanded are configured using the FieldServer CSV file.

Dynamic Operation : If the hardware configuration may change or if hardware settings may change dynamically or (more realistically) if you wish to change some aspect of the hardware configuration such as a delay time or reset a latch without changing the CSV file and resetting the FieldServer then this operating method is suitable. The commands set can be configured by changing the values in the FieldServer’s data arrays. This operating mode may be considered a data driven one.

Triggered Operation : This operating mode allows commands to be triggered by changing the value in the FieldServer’s data arrays. This operating mode is useful if requiring an action triggered by a remote device.

More information, Driver Data Sheet

Range of Conversion Solutions

Depending on project requirements select from units with varying resources. and multi port devices. OEM and embedded solutions too.
QuickServer 1010 2x RS485 1x Ethernet
QuickServer 1011 1x RS485 1x Ethernet 1x Lonworks
QuickServer 1020 1x RS485 1xRS232 1x Ethernet
QuickServer 1021 1x RS485 1xRS232 1x Ethernet 1x Lonworks
QuickServer Fieldbus 1x RS485 1x Ethernet M-bus or KNX
FS20 Series 1x RS232/485 1x Ethernet 1x Lonworks
FS25 Series 2x RS232/485 1x Ethernet
FS30 Series 2x RS232 and 2x RS485 2x Ethernet 1x Lonworks FieldBus Support:eg Profibus, DeviceNet etcHot Standby Support
FS40 Series 8x RS232 and 2x RS485 2x Ethernet 1x Lonworks FieldBus Support: eg DH+, MB+, Profibus, DeviceNet etcHot Standby Support
SlotServer 1x RS232/485 1x Ethernet 1x Lonworks For Rockwell ControlLogix 5600
Lonworks and Fieldbus are options not provided on base models.  

Connection Diagram



Optomux Opto22

Purchase Now

You can purchase some of these items now at We keep stock of most gateways and CAS can often ship for next day delivery. Often we need to do due diligence with you, check the number of devices, trunks, points , network routing and many other factors and thus we like a chance to chat to you, learn your project requirements and work with you to provide the most effective solution. Contact us.

Configuration and Support

With CAS you are purchasing a solution - not a commodity. If you ask CAS to do the gateway configuration for you then you are purchasing a solution from us and we will work with you to pre-configure the device, make changes as you require them, keep a backup of your files and provide support for you and your customer when installation is done.

CAS are famous for a high level of effective and responsive support. We work with you using voice, email and remote desktop applications.

Contact us

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Call us: 1-866-383-1657 (Toll Free) or (778) 370-3882
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